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Abdulkareem AA, Al-Taweel FB, Al-Sharqi AJ, Gul SS, Sha A, Chapple IL. Current concepts in the pathogenesis of periodontitis: from symbiosis to dysbiosis. J Oral Microbiol 2023; 15:2197779. [PMID: 37025387 PMCID: PMC10071981 DOI: 10.1080/20002297.2023.2197779] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
The primary etiological agent for the initiation and progression of periodontal disease is the dental plaque biofilm which is an organized aggregation of microorganisms residing within a complex intercellular matrix. The non-specific plaque hypothesis was the first attempt to explain the role of the dental biofilm in the pathogenesis of periodontal diseases. However, the introduction of sophisticated diagnostic and laboratory assays has led to the realisation that the development of periodontitis requires more than a mere increase in the biomass of dental plaque. Indeed, multispecies biofilms exhibit complex interactions between the bacteria and the host. In addition, not all resident microorganisms within the biofilm are pathogenic, since beneficial bacteria exist that serve to maintain a symbiotic relationship between the plaque microbiome and the host’s immune-inflammatory response, preventing the emergence of pathogenic microorganisms and the development of dysbiosis. This review aims to highlight the development and structure of the dental plaque biofilm and to explore current literature on the transition from a healthy (symbiotic) to a diseased (dysbiotic) biofilm in periodontitis and the associated immune-inflammatory responses that drive periodontal tissue destruction and form mechanistic pathways that impact other systemic non-communicable diseases.
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Affiliation(s)
- Ali A. Abdulkareem
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
- CONTACT Ali A. Abdulkareem College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Firas B. Al-Taweel
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Ali J.B. Al-Sharqi
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Sarhang S. Gul
- College of Dentistry, University of Sulaimani, Sulaimani, Iraq
| | - Aram Sha
- College of Dentistry, University of Sulaimani, Sulaimani, Iraq
| | - Iain L.C. Chapple
- Periodontal Research Group, Institute of Clinical Sciences, College of Medical & Dental Sciences, University of Birmingham, Birmingham, UK
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Sha A. P059 Awareness among women regarding warning signs and effective screening methods in breast cancer. Breast 2023. [DOI: 10.1016/s0960-9776(23)00178-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
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Sha A. Musculoskeletal pain and health-related quality of life among breast cancer patients. Breast 2021. [DOI: 10.1016/s0960-9776(21)00261-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Zardawi F, Gul S, Abdulkareem A, Sha A, Yates J. Association Between Periodontal Disease and Atherosclerotic Cardiovascular Diseases: Revisited. Front Cardiovasc Med 2021; 7:625579. [PMID: 33521070 PMCID: PMC7843501 DOI: 10.3389/fcvm.2020.625579] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 12/17/2020] [Indexed: 01/15/2023] Open
Abstract
Atherosclerotic cardiovascular disease (ACVD) is an inflammatory disease of the coronary arteries associated with atheroma formation, which can cause disability and often death. Periodontitis is ranked as the sixth most prevalent disease affecting humans affecting 740 million people worldwide. In the last few decades, researchers have focused on the effect of periodontal disease (PD) on cardiovascular disease. The aim of this review was to investigate the association between these two diseases. PD is a potential risk factor that may initiate the development, maturation, and instability of atheroma in the arteries. Two mechanisms were proposed to explain such association, either periodontal pathogens directly invade bloodstream or indirectly by increasing systemic level of inflammatory mediators. Interestingly, it has been suggested that improvement in the condition of one disease positively impact the condition of the other one. Highlighting the association between these two diseases, the importance of early diagnosis and treatment of PD and its impact on cardiovascular status may be of great value in reducing the complications associated with ACVDs. Further in vitro and in vivo studies with longer follow up are necessary to confirm the causal relationship between PD and ACVDs.
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Affiliation(s)
- Faraedon Zardawi
- Periodontics Department, College of Dentistry, University of Sulaimani, Sulaymaniyah, Iraq
| | - Sarhang Gul
- Periodontics Department, College of Dentistry, University of Sulaimani, Sulaymaniyah, Iraq
| | - Ali Abdulkareem
- Department of Periodontics, College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Aram Sha
- Periodontics Department, College of Dentistry, University of Sulaimani, Sulaymaniyah, Iraq
| | - Julian Yates
- Division of Dentistry, School of Medical Sciences, University of Manchester, Manchester, United Kingdom
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Cai J, Liu L, Jiang X, Li P, Sha A, Ren J. Low body mass index is associated with ectopic pregnancy following assisted reproductive techniques: a retrospective study. BJOG 2020; 128:540-550. [PMID: 32575153 DOI: 10.1111/1471-0528.16378] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2020] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To investigate the association between body mass index (BMI) and ectopic pregnancy (EP) following embryo transfer (ET). DESIGN Retrospective cohort study. SETTING University-affiliated hospital. POPULATION A total of 16 378 pregnancies derived from either fresh ET or frozen-thawed ET between January 2008 and December 2017. METHODS We used the generalised estimating equation (GEE) to analyse the association between BMI categories and EP, as one woman may contribute to more than one pregnancy. Generalised additive models were also used to demonstrate the non-linear association. Models were adjusted for age, parity, gravidity, previous history of ectopic pregnancy, duration of infertility, polycystic ovary syndrome, endometriosis, diagnosis of tubal problems, ovarian reserve markers, ovarian stimulation parameters, insemination protocol, endometrial thickness and embryo transfer policies. MAIN OUTCOME MEASURES Ectopic pregnancy. RESULTS According to the WHO criteria, the number of cycles with low (<18.5 kg/m2 ), normal (18.5-24.9 kg/m2 ) and high (≥25 kg/m2 ) BMI were 2155, 13 447 and 776, respectively. In comparison with the normal BMI group, the rate of EP was significantly increased in the low BMI group (2.92% versus 2.02%, relative risk 1.45, 95% CI 1.11-1.90), but not in the high BMI group (2.84%, relative risk 1.41, 95% CI 0.92-2.20). Adjusted for confounding factors, the odds ratio for EP comparing low BMI versus normal BMI was 1.61 (95% CI 1.19-2.16) and that comparing high BMI versus normal BMI was 1.12 (95% CI 0.72-1.76). CONCLUSIONS Low BMI is associated with an increased risk of EP. TWEETABLE ABSTRACT The ectopic pregnancy rate after embryo transfer for lean women is higher than that for women of normal weight.
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Affiliation(s)
- J Cai
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China.,School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - L Liu
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China.,School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - X Jiang
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
| | - P Li
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
| | - A Sha
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
| | - J Ren
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
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Cai J, Liu L, Xu Y, Liu Z, Jiang X, Li P, Sha A, Ren J. Supraphysiological estradiol level in ovarian stimulation cycles affects the birthweight of neonates conceived through subsequent frozen‐thawed cycles: a retrospective study. BJOG 2019; 126:711-718. [PMID: 30628169 DOI: 10.1111/1471-0528.15606] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2018] [Indexed: 12/01/2022]
Affiliation(s)
- J Cai
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
- Medical College of Xiamen University Xiamen China
| | - L Liu
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
- Medical College of Xiamen University Xiamen China
| | - Y Xu
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
| | - Z Liu
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
| | - X Jiang
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
| | - P Li
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
| | - A Sha
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
| | - J Ren
- The Affiliated Chenggong Hospital of Xiamen University Xiamen China
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Sha A. 428P_PR Domestic cooking fuel as a risk factor for lung cancer in women - A case control study. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw592.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Sha A. 37P Domestic cooking fuel as a risk factor for lung cancer in women: A case control study. J Thorac Oncol 2016. [DOI: 10.1016/s1556-0864(16)30151-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Sha A. Knowledge attitude and practice towards infection control measures amongst healthcare workers in a medical teaching hospital of Calicut District, Kerala, India. Antimicrob Resist Infect Control 2015. [PMCID: PMC4475204 DOI: 10.1186/2047-2994-4-s1-p270] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Sha A. Knowledge and Attitude Towards Vaccine Trial Concepts and the Functional Status and Disability of Patients with HIV/AIDS. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sha A. Socio-Economic Impact on Oral Health-Related Quality of Life of Parkinson's Disease Patients: Evidence from India. Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv096.292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Shan Z, Li S, Liu Y, Yang Z, Yang C, Sha A, Chen H, Chen S, Zhou XA. First Report of Phomopsis Seed Decay of Soybean Caused by Phomopsis longicolla in South China. Plant Dis 2012; 96:1693. [PMID: 30727483 DOI: 10.1094/pdis-04-12-0401-pdn] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Phomopsis seed decay of soybean (Glycine max (L.) Merr.) causes poor seed quality and suppresses yield in most soybean-growing areas in the world. The disease is caused primarily by Phomopsis longicolla Hobbs. During the spring of 2010, soybean seeds without symptoms were planted in the fields but emergence was poor and the emergence rates ranged from 30 to 70% in south China. Approximately 3,000 symptomless seeds were randomly collected from seven fields at three locations in Guangzhou, Nanchang, and Wuhan. Seeds were surface disinfected with 1% sodium hypochlorite for 12 min, rinsed in sterile distilled water three to four times, and placed on 2% agar. Plates were then incubated at 26°C under 16/8-h photoperiod for 3 to 4 days. About 10 to 20% of the seeds produced white hyphae that spread rapidly and covered the whole seed. The hyphae from fungal isolates were transferred to potato dextrose agar (PDA) and incubated at 26°C in the dark. After 3 to 4 weeks, conidia were elliptical with two oil drops at both ends and hyaline (6.2 to 7.2 × 2.6 to 3.2 μm). The cultural and morphological characteristics of the isolates corresponded with the description of P. longicolla (2). Colonies on PDA were floccose, dense, and white. Stromata were large, black, and spreading. To confirm the morphological identification, the ribosomal internal transcribed spacers (ITS1-5.8S-ITS2) from three isolates were sequenced (GenBank Accession Nos. JQ899030, JQ899031, and JQ899032). BLAST analysis indicated that the isolates had 99% nucleotide sequence identity with P. longicolla (GenBank Accession Nos. AY857868.1, EF026104, and HQ130441.1). Pathogenicity tests were conducted on 2-week-old soybean seedlings (3). A mycelial plug (3 mm in diameter) from the margin of 1-week-old PDA culture of the Wuhan isolate was individually placed mycelial side down directly on the top of cut stem 1 to 2 cm above cotyledon node of the soybean seedling. PDA plugs without the fungus was used as the negative control. All seedlings were kept in a growth chamber at 26°C with 92 to 94% relative humidity. After 2 weeks, all inoculated seedlings showed browning, stem wilt, and the lesions were 0.3 to 2.0 cm long. No symptoms were observed in the control plants. P. longicolla was reisolated from the infected seedlings. The pathogenicity test was repeated three times. Soybean stem blight caused by P. longicolla has been reported in northeast China (1). To our knowledge, this is the first report of P. longicolla causing Phomopsis seed decay of soybean in south China. This report will establish a foundation for developing a program for screening germplasm for resistance to this disease in south China. References: (1) Y. L. Cui et al. Plant Pathol. 58:799, 2009. (2) T. W. Hobbs et al. Mycologia 77:535,1985. (3) S. Li et al. Plant Dis. 85:1031, 2001.
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Affiliation(s)
- Z Shan
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan, 430062, China
| | - S Li
- Department of Agriculture-Agricultural Research Service, Crop Genetics Research Unit, Stoneville, MS 38776
| | - Y Liu
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture
| | - Z Yang
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture
| | - C Yang
- South China Agriculture University, Guangzhou, 510642, China
| | - A Sha
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan, 430062, China
| | - H Chen
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan, 430062, China
| | - S Chen
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan, 430062, China
| | - X-A Zhou
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences and Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan, 430062, China
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Tai JY, Vella PP, McLean AA, Woodhour AF, McAleer WJ, Sha A, Dennis-Sykes C, Hilleman MR. Haemophilus influenzae type b polysaccharide-protein conjugate vaccine. Proc Soc Exp Biol Med 1987; 184:154-61. [PMID: 3543938 DOI: 10.3181/00379727-184-42460] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
An Haemophilus influenzae type b capsular polysaccharide-protein conjugate has been prepared. The polysaccharide was coupled to the serotype II protein of group B meningococcus through the spacer 6-aminocaproic acid using cyanogen bromide and water soluble carbodiimide. The conjugate can be shown to be reproducible and is stable and highly immunogenic in mice and African green monkeys. Clinical evaluation of this conjugate in children 3 months to 4 years of age showed that it elicited an antibody titer to the polysaccharide moiety greater than 1000 ng/ml in children 8 months of age or older.
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